Reflector-lamp.



E. B. CORCORAN.

REFLECTOR LAMP.

APPLlCATlON FILED MAR. 4. me.

1,228,749.. Patented June 1917.

EDWARD B. CORCORAN', or CINCINNATI, OHIO, ASSIGNOR, BY MEsNI: ASSIGNMENTS, To

THE CORCORAN-VICTOR COMPANY, or CINCINNATI, 0310, a CORPORATION or OHIO.

REFLECTOR-LAMP.

- Specification of Letters Patent.

Patented June 5, 191?.

Application filed march 4, 191a Serial No. 82,032.

' To all whom it may concern:

Be it known that I, EDWARD B. CoRooRAN, a citizen of the United States, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Reflector-Lamps, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

My invention relates to lampshaving reflectors in which are set electric bulbs, and particularly to such lamps having two bulbs and electrical connections wherein one of the bulbs is for dim light and one for bright light. dimmer bulb is set at some point ofl the center of the reflector and the main bulb is set directly at the center. This main or bright bulb must be arranged so that it can be moved in and out and held in position for proper focus.

In the devices in the past there has been much complication in the wiring of the two bulbs, necessitating a plug into the back casing of the lamp bearing the wires for the two bulbs, and sets of wires running from the plug to the two bulbs.

It is my object to provide a simple and convenient arrangement of the electrical connections of the two bulbs as above identified and in combination with this to provide a means for adjusting .the focus of themain or bright bulb.

be apparent I obtain by that certain construction and arrangement of parts to .be hereinafter more specifically pointed out and claimed.

In the drawing,

Figure 1. is a side elevation of the lamp with the casing broken away to show the internal construction.

Fig. 2 is a similar view of the central parts of the lamppn an enlarged scale.

Fig. 3 is a longitudinal section through the adju table socket piece.

Fig. 4 is'ai rear elevation of the adjustable socket and connection piece.

The lamp has a reflector shell 1 and a main casing 2, said two members being joined at the front, and covered at the front by a suitable glass 3. The reflector is cut out at the center and flanged rearwardly at 4. around the opening, and the casing is like- In lamps of this character, thewise flanged inwardly at the center at 5. It is of course not necessary that the flanges be, integral with the shells and the length of the flanges is to be as desired.

At a point, in this instance, above the central point of the reflector, is formed another opening having a flange 6 extending in- Wardly therefrom, for the dimmer bulb. Supported in this flange is a socket piece 7 of usual construction, having wires 8 and 9 secured thereto. A small electric bulb 10 is'secured in said socket piece by means of a bayonet lock in the ordinary manner.

Mounted. so as to extend across the space between the reflector and shell is a' tubular member 11, which is held in place by means of the flanges above mentioned at the cen tral portions of said parts. Mounted on allow for some play in both directions of this tubular member it should be long enough to slide to and fro in the flanges, Without coming out of them. Inside of the tubular member is a core 17 which is a. non-conductive material, and which has embedded in it, in this instance, three small brass tubes 18. In the inner end of the core there are two spring pins 19 extending into two of the tubes, and the third tube preferably terminates at about the center of the core.

The tubular member embracing the core extends inwardly therefrom so as to provide a bayonet lock of the usual type for the main or bright electric bulb 20. This bulb has thus two connections through the core.

The tubes 18, three in number, as stated, are each fitted with a spring pin 19 at the outer end of the core, and the tubular mem- I the short tube 18 and one into one of the long tubes, which same is employed as a common conductor for the two lamps. The wires 8 and 9 are secured to the two screws, thus supplying connection to the small or dimmer bulb.

It is thus evident that by employing the adjustable tubular member as a point 0 connection for the wires of the dimmer bulb, I am enabled to have the greatest simplicity in the installation within the reflector and the casing. It will be understood that in a single wire system, using the body of the vehicle or machine as a ground, there would be simply two tubes in the main core instead of one. The adjustability for focusing the main bulb is not disturbed by the arrangement of the Wires, since the movement is perfectly free of the tubular member.

I do not wish to be limited in the claim that follows to the exact structure described in the foregoing description, as the description refers but to the preferred form of my invention; on the contrary I wish to be entitled to the full scope of the doctrine of equivalents in a the construction of my claim. Also Ivdo not wish to be limitedin my claim because of my failure at this time to appreciate the full usefulness of my invention, as I intend it to be used in the future in any 'manner that may turn out to be economical and convenient, and that mere mechanical changes necessary to adapt it to future uses be fully included in the scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

An electric headlight comprising an outer shell, and a reflector shell, a plug, a double end socket piece adjustably supported between said shells on approximately the axial line or at the focal-point thereof, said socket piece adapted to receive, from inside the reflector, a lamp, and from outside the shell,

the plug, another lamp located outof focus of'the reflector, wires from the sides of said socket piece intermediate the shells to the other lamp, said plug and socket piece having electrical connection for both lamps.

EDWARD B.- CORCORAN. 

